Our Heavy-Duty tubes are made specifically for off-road riding. These are the sturdiest, highest quality tubes on the market. They are 3mm thick with natural rubber construction to better resist pinch flats and are easier to patch than butyl rubber tubes. These have a straight metal valve stem. New tubes deserve new rim strips. Don't forget to add them in to your order.

• 17" tube works with 120,130 and 140 metric tires or 4.50 to 5.10 inch size tires
• 18" tube works with 100 to 130 metric or 4.00 to 5.10 inch size tires
• 19" tube works with 100 to110 metric or 4.00 to 4.60 inch size tires
• 21" tube works with 80 to 100 metric or 3.00 to 3.50 inch size tires